chore(ci): use Ubuntu 26.04 and clang-format-22

[DennisOSRM]

fixes #7249

[codecov]

Codecov Report

❌ Patch coverage is 87.81726% with 72 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.15%. Comparing base (9be3304) to head (562799a).

Files with missing lines	Patch %	Lines
unit_tests/engine/offline_facade.cpp	23.52%	26 Missing ⚠️
unit_tests/mocks/mock_datafacade.hpp	18.51%	22 Missing ⚠️
...e/datafacade/contiguous_internalmem_datafacade.hpp	89.58%	5 Missing ⚠️
include/engine/datafacade_provider.hpp	66.66%	2 Missing ⚠️
src/util/assert.cpp	0.00%	2 Missing ⚠️
include/engine/api/route_api.hpp	50.00%	1 Missing ⚠️
include/engine/guidance/collapsing_utility.hpp	90.90%	1 Missing ⚠️
include/engine/plugins/plugin_base.hpp	50.00%	1 Missing ⚠️
include/engine/routing_algorithms.hpp	90.00%	1 Missing ⚠️
include/guidance/turn_instruction.hpp	66.66%	1 Missing ⚠️
... and 10 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7655      +/-   ##
==========================================
+ Coverage   90.75%   94.15%   +3.39%     
==========================================
  Files         484      484              
  Lines       37690    37688       -2     
==========================================
+ Hits        34205    35484    +1279     
+ Misses       3485     2204    -1281     

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